15%甲维·茚虫威悬浮剂对玉米田草地贪夜蛾防治效果初探

Study on the Control Effect of 15%Carbaryl Indocarb Suspension on Spodoptera Litura in Maize Field

为探索不同杀虫剂对草地贪夜蛾田间防治效果,选取15%甲维•茚虫威悬浮剂等药剂在玉米田开展了草地贪夜蛾田间防治效果研究。试验结果表明,使用15%甲维•茚虫威悬浮剂25 mL/0.067 hm^(2)防治效果最佳,药后3 d、7 d、14 d的防治效果分别为88%、92%、93.63%;其次为15%甲维·茚虫威悬浮剂20 mL/0.067 hm^(2),药后3 d、7 d、14 d的防治效果分别为85.45%、89.09%、90.34%,且在试验剂量下对玉米安全。综合考虑试验结果和防治成本,使用20 mL/0.067 hm^(2)15%甲维•茚虫威悬浮剂可作为防治玉米田草地贪夜蛾的优先应急用药措施。

In order to explore the field control effects of different insecticides on Spodoptera meadowi and provide basis for scientific control,this study selected 15%carbaryl indocarb suspension to study the field control effects of Spodoptera meadowi in corn field.The results showed that 25 mL/0.067 hm^(2) of 15%carbaryl ninchongwei suspension had the best control effect,and the control effects were 88%,92%and 93.63%respectively at 3,7 and 14 days after treatment.The second was 15%carbaryl ninchongwei suspension 20 mL/0.067 hm^(2).The control effects were 85.45%,89.09%and 90.34%at 3,7 and 14 days respectively.And it is safe for corn at the test dose.Comprehensively considering the test results and control cost,the use of 20 mL/0.067 hm^(2)15%carbaryl indocarb suspension can be used as a priority emergency drug measure for the control of Spodoptera litura in corn field.